<template>
  <div>
    <nav-bar>
      <div slot="left" class="back" @click="backClick">
        <img src="~assets/img/common/back.svg" />
      </div>
      <div slot="center" class="title">
        <div v-for="(item,index) in titles"
        class="title-item"
        :class="{active: index === currentIndex}"
        @click="titleClick(index)">{{item}}</div>
      </div>
    </nav-bar>
  </div>
</template>

<script>
  import NavBar from 'components/common/navbar/NavBar'

  export default {
    name: "DetailNavBar",
    components:{
      NavBar
    },
    data(){
      return {
        titles:['商品','参数','评论','推荐'],
        currentIndex: 0
      }
    },
    methods:{
      titleClick(index){
        this.currentIndex = index
      },
      backClick(){
        this.$router.go(-1)  //.back（）也许
      }
    }
  }
</script>

<style>
  .title{
   display: flex;
   font-size: 13px;
  }
  .title-item{
    flex: 1;
  }
  .active{
    color: var(--color-high-text);
  }
  .back{
    margin-top: 10px;
  }
</style>
